Sorting an array by an object property

sortByProperty.swift

// Swift 3

// Simple object example
class Phone {
    
    let name: String
    let serialNumber: Int
    
    init(name: String, serialNumber: Int) {
        self.name = name
        self.serialNumber = serialNumber
    }
}

// Create objects
let phoneOne = Phone(name: "Cell", serialNumber: 12345)
let phoneTwo = Phone(name: "Work", serialNumber: 24586)
let phoneThree = Phone(name: "Test Phone", serialNumber: 56893)

// Create array of Phones
var myPhones: [Phone] = [phoneOne, phoneTwo, phoneThree]

// Example 1: Sort array in-place by name in ASCENDING alphabetical order
// myPhones is now in this order: [phoneOne, phoneThree, phoneTwo]
myPhones.sort(by: { $0.name < $1.name })


// Example 2: Sort into a new array by serial number in DECENDING order
// newSortedArray is now in this order: [phoneThree, phoneTwo, phoneOne]
let newSortedArray = myPhones.sorted(by: { $0.serialNumber > $1.serialNumber})